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Aerosol Deposition Method : A new way to fabricate conductive solid electrolytes for next generation Li ion batteries

Title data

Nazarenus, Tobias ; Hanft, Dominik ; Moos, Ralf:
Aerosol Deposition Method : A new way to fabricate conductive solid electrolytes for next generation Li ion batteries.
2019
Event: PACRIM 13, The 13th Pacific Rim Conference of Ceramic Societies , 27.10.-1.11.2019 , Okinawa, Japan.
(Conference item: Conference , Speech )

Abstract in another language

Solid-state batteries are of high interest for the next generation of lithium ion batteries. Due to their wide electrochemical working range, ceramic solid electrolytes offer a promising alternative to currently used lithium ion batteries with liquid electrolytes and enable new possibilities for the cell design. Using metallic lithium instead of intercalation electrodes like graphite will significantly increase the specific anode capacity and at the same time due to the non-flammable solid electrolyte the operation safety is increased. The economical mass production of solid electrolyte cells is a major challenge due to limited production technologies. Ceramic processing technologies used today are characterized by high processing temperatures and cost-intensive system components. This often results in problems such as interdiffusion processes during co-sintering methods, high electrolyte layer thicknesses and long process times. The Aerosol Deposition Method (ADM) can meet all these challenges and build dense solid electrolyte layers in a thickness range of several μm without the disadvantages of conventional ceramic coating techniques. The method is characterized by the application of dense, adhesive ceramic layers at room temperature without the need for a heat treatment step. Thus, a very wide range of different substrates can be used. The films are formed directly from the powder with neither a powder treatment nor solvents. During the process, the material does not undergo any phase transformation and the stoichiometry is retained. Although no thermal treatment during the deposition is necessary, it can be shown that a thermal treatment at low temperatures after the process significantly increases the layer conductivity. In the present work, the formation of thin solid electrolyte films by aerosol deposition is shown. Furthermore, the suitability of the layers as Li-ion conductors are investigated. Therefore, the generated layers are investigated with optical and electrochemical methods.

Further data

Item Type: Conference item (Speech)
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 11 Nov 2019 13:19
Last Modified: 11 Nov 2019 13:19
URI: https://eref.uni-bayreuth.de/id/eprint/53150